Nanogold Biosynthesis Mediated by Mixed Flower Pollen Grains

Area of Science:

• Nanotechnology
• Materials Science
• Green Chemistry

Background:

• Traditional physical and chemical nanoparticle synthesis methods are energy-intensive and environmentally unfriendly.
• Biological approaches offer a more sustainable and efficient alternative for nanoparticle production.

Purpose of the Study:

• To design a simple, efficient, and environmentally friendly method for gold nanoparticle (AuNP) synthesis.
• To utilize mixed flower pollen grains as a template for *in vitro* AuNP biosynthesis.

Main Methods:

• A static, bottom-up experiment was conducted under laboratory conditions.
• Suspensions of mixed flower pollen grains were used as substrates for Au(III) reduction.
• Transmission electron microscopy (TEM), scanning electron microscopy (SEM), and ultraviolet-visible (UV-Vis) spectroscopy were employed for characterization.

Main Results:

• The formation of gold nanoparticles (AuNPs) was confirmed using microscopy and spectroscopy.
• Biosynthesized AuNPs exhibited a narrow size distribution, ranging from 3 to 11 nm.
• The synthesized AuNPs predominantly displayed a spherical morphology and showed no aggregation, indicating excellent stability and dispersity in the pollen dispersion.

Conclusions:

• Flower pollen is an effective and sustainable bio-template for the green synthesis of stable and well-dispersed gold nanoparticles.
• This phytosynthesis method presents a promising alternative to conventional nanoparticle fabrication techniques.
• The resulting gold nanoparticles possess desirable characteristics for potential applications in various fields.